(In XCOM: Enemy Unknown Closed-Doors Footage)
Firaxis has released a seven-minute long gameplay walkthrough for XCOM: Enemy Unknown... which happens to be very similar to the closed-door preview I experienced at E3 2012. You should definitely check this one out; not just because it gives a fantastic overview of the gameplay systems, squad progression and enemies (that was previously only available to us press types) but because Sid Meier makes a cameo appearance as the leader of Reaper Squad.
None can stand before Meier's psychokinetic might.
It's a fantastic accompaniment to our XCOM: Enemy Unknown preview.